About the Authors

Thomas J. H. Morgan

Roles Conceptualization, Formal analysis, Writing – original draft, Writing – review & editing

Thomas.j.h.morgan@asu.edu

Affiliations School of Human Evolution and Social Change, Arizona State University, Tempe, Arizona, United States of America, Institute of Human Origins, Arizona State University, Tempe, Arizona, United States of America

Alberto Acerbi

Roles Conceptualization, Writing – original draft, Writing – review & editing

Affiliation Eindhoven University of Technology, Eindhoven, The Netherlands

Edwin J. C. van Leeuwen

Roles Conceptualization, Writing – original draft, Writing – review & editing

Affiliations University of St Andrews, Westburn Lane, St Andrews, Scotland, Max Planck Institute for Psycholinguistics, Wundtlaan 1, Nijmegen, The Netherlands, Centre for Research and Conservation, Royal Zoological Society of Antwerp, Antwerp, Belgium

Competing Interests

The authors have declared that no competing interests exist.